i've been doing, including two recent lagers, the process you mention evil_morty
on my pilsner i grew up 3 vials in 2.75L in a 5L flask, put on my stir plate, fermented, crashed. on brewday, I decanted and ran 4L of the chilled main wort into the flask, aerated and put into my fermentation fridge, then ran the remaining 11gal into my conical. once the 4L was at high krausen i pitched the whole flask into the conical.
I did the same, albeit collected yeast from dump valve for the pils and ran 4L of vienna into the flask and followed the same procedure in my other conical.
so far, i've been very happy with my results. my pils finished quickly and cleanly - i just kegged and it seems great. vienna is still awaiting to be kegged, but it also seemed to ferment strongly and samples have been great.
I should caveat this is NOT the process that Mark is recommending.
for an APA, i pitched 2 vials of 001 into 2L of chilled wort from the kettle, and once at high krausen, pitched in the main wort - similar to my lager process, but without and prior growth on stir plate.